/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.utils.compat;
import android.text.TextUtils;
import android.util.Log;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
public class CompatUtils {
private static final String TAG = CompatUtils.class.getSimpleName();
/** Whether to log debug output. */
private static boolean DEBUG = false;
public static Class<?> getClass(String className) {
if (TextUtils.isEmpty(className)) {
return null;
}
try {
return Class.forName(className);
} catch (ClassNotFoundException e) {
if (DEBUG) {
e.printStackTrace();
}
}
return null;
}
public static Method getMethod(Class<?> targetClass, String name,
Class<?>... parameterTypes) {
if ((targetClass == null) || TextUtils.isEmpty(name)) {
return null;
}
try {
return targetClass.getDeclaredMethod(name, parameterTypes);
} catch (Exception e) {
if (DEBUG) {
e.printStackTrace();
}
}
return null;
}
public static Field getField(Class<?> targetClass, String name) {
if ((targetClass == null) || (TextUtils.isEmpty(name))) {
return null;
}
try {
return targetClass.getDeclaredField(name);
} catch (Exception e) {
if (DEBUG) {
e.printStackTrace();
}
}
return null;
}
public static Object invoke(
Object receiver, Object defaultValue, Method method, Object... args) {
if (method == null) {
return defaultValue;
}
try {
return method.invoke(receiver, args);
} catch (Exception e) {
Log.e(TAG, "Exception in invoke: " + e.getClass().getSimpleName());
if (DEBUG) {
e.printStackTrace();
}
}
return defaultValue;
}
public static Object getFieldValue(Object receiver, Object defaultValue, Field field) {
if (field == null) {
return defaultValue;
}
try {
return field.get(receiver);
} catch (Exception e) {
if (DEBUG) {
e.printStackTrace();
}
}
return defaultValue;
}
private CompatUtils() {
// This class is non-instantiable.
}
}